cmd/evm: add state transition tool for testing (#20958)

This PR implements the EVM state transition tool, which is intended
to be the replacement for our retesteth client implementation.
Documentation is present in the cmd/evm/README.md file.

Co-authored-by: Felix Lange <fjl@twurst.com>

cmd/evm/testdata/3/alloc.json

@@ -0,0 +1,16 @@
+{
+  "0x095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+    "balance" : "0x0de0b6b3a7640000",
+    "code" : "0x600140",
+    "nonce" : "0x00",
+    "storage" : {
+    }
+  },
+  "0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+    "balance" : "0x0de0b6b3a7640000",
+    "code" : "0x",
+    "nonce" : "0x00",
+    "storage" : {
+    }
+  }
+}

cmd/evm/testdata/3/env.json

@@ -0,0 +1,8 @@
+{
+  "currentCoinbase" : "0x2adc25665018aa1fe0e6bc666dac8fc2697ff9ba",
+  "currentDifficulty" : "0x020000",
+  "currentGasLimit" : "0x3b9aca00",
+  "currentNumber" : "0x05",
+  "currentTimestamp" : "0x03e8",
+  "blockHashes" : { "1" : "0xdac58aa524e50956d0c0bae7f3f8bb9d35381365d07804dd5b48a5a297c06af4"}
+}

cmd/evm/testdata/3/readme.md

@@ -0,0 +1,2 @@
+These files examplify a transition where a transaction (excuted on block 5) requests
+the blockhash for block `1`. 

cmd/evm/testdata/3/txs.json

@@ -0,0 +1,14 @@
+[
+  {
+    "input" : "0x",
+    "gas" : "0x5f5e100",
+    "gasPrice" : "0x1",
+    "nonce" : "0x0",
+    "to" : "0x095e7baea6a6c7c4c2dfeb977efac326af552d87",
+    "value" : "0x186a0",
+    "v" : "0x1b",
+    "r" : "0x88544c93a564b4c28d2ffac2074a0c55fdd4658fe0d215596ed2e32e3ef7f56b",
+    "s" : "0x7fb4075d54190f825d7c47bb820284757b34fd6293904a93cddb1d3aa961ac28",
+    "hash" : "0x72fadbef39cd251a437eea619cfeda752271a5faaaa2147df012e112159ffb81"
+  }
+]